Perhaps the Society for the Preservation of Natural History Collections is who you are looking for? https://spnhc.org/
This international group is collections focused. My colleagues who work with our zoology collections participate in this organization.
Personally, I just like the fact that the acronym seems to be pronounced "spinach".
Wendy
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Wendy Derjue-Holzer
Director of Education, HMNH
Harvard Museums of Science and Culture
Cambridge MA
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